What is the main ingredient in bourbon?

Most brandys are made of distilled wine. The first answer given ("Most hrandys are made of distilled wine.") is a good start. Here is some more information that may be helpful. Brandy is a generic term used to describe a spirit made from fermented mashed fruit or distilled wine. French brandies like Armagnac and Cognac are made from distilled wine. The grape varieties used to make these brandies are Unugi Blanc and Fole Blanche. Other grape brandies are made in Mexico , the U.S., Greece,Israel, and Spain. Brandies that are made from Apples are Applejack (U.S.) and Calvados (Spain). Plums are used to make Quetsch, Slivovits, and Mirabell. If you would like a brandy made from cherries, try Kirsh.